INDIANAPOLIS – Depending on the results of potentially season-making (or season-breaking) test results, Tim Hardaway Jr. may be out a while.

The starting shooting guard did not travel with the Knicks to Monday’s game at Indiana, as doctors in New York tried to uncover the reason for the pain in his lower leg that was described as a “stress reaction.”

If that diagnosis becomes a “stress fracture,” Hardaway Jr.’s recovery could last months.

“We will know a lot more in the next couple of days,” his agent, Mark Bartelstein, told the Daily News.

If Tim Hardaway Jr.'s injury turns out to be worse, he could miss several months.

(Julie Jacobson/AP)

There’s a lot at stake in those test results for the Knicks, who lost Sunday afternoon at home without Hardaway Jr.

“I think it’s concerning for anybody when an injury keeps you out more than a game or two. So he’s getting evaluated and we’ll probably find out more,” Jeff Hornacek said. “In the meantime, guys have to pick it up for us. Tim was not only a scorer for us. He gave us activity, he drove to the basket. You could put him in high pick-and-rolls, he can make some plays out of that. Some of the guys can do stuff out of that. We’re hoping it’s not too long.”

Kristaps Porzingis also missed Monday’s game because of a sprained right ankle and illness, but his injury is not considered serious. Hardaway Jr. has dealt with multiple ailments already in this short season, including a sore calf, sore foot and, as Hornacek revealed Monday, a sprained ankle.

It's been a rough go lately for the Knicks, who have struggled with the absences of Kristaps Porzingis and Tim Hardaway Jr.

(Brad Penner/USA TODAY Sports)

Through it all, Hardaway Jr. has averaged career highs in points (17.8), assists (3.3), rebounds (4.2) and minutes (34.1). But the workload has already taken a toll.

“He’s a tough kid. He’s got ankle sprains and he didn’t miss practices. He’d play through those things. That’s good attributes to have a guy, a guy who goes out there and plays through injuries. This could be a wear-and-tear situation,” Hornacek said. “I think he’s been huge (for us). Obviously KP has taken up that leadership role but Tim’s right up and made some big plays. The two-man game we run there with KP, he’s been pretty good late in games. He has the ability to be outside but he can also drive the ball.”